Service Manual
Table Of Contents
- Title Page
- Revision History
- Reader Comments
- Preface
- Table of Contents
- 1 - Safety
- 2 - Product Records and Maintenance
- 3 - Kubota Diesel Engine
- 4 - Hydraulic System
- Specifications
- General Information
- Hydraulic Schematic
- Hydraulic Flow Diagrams
- Special Tools
- Troubleshooting
- Testing
- Traction Circuit Relief Valve (R3) and (R4) Pressure Test
- Traction Circuit Charge Pressure Test
- Gear Pump (P3) Flow Test
- Front Wheel Motor Efficiency Test
- Piston (Traction) Pump Flow Test
- Relief Valve (PRV1) and (PRV2) Pressure Test
- Gear Pump (P1) and (P2) Flow Test
- Deck Motor Efficiency Test
- Lift Relief Valve (PRV) Pressure Test
- Gear Pump (P4) Flow Test
- Lift Cylinder Internal Leakage Test
- Steering Relief Valve (R10) Pressure Test
- Steering Cylinder Internal Leakage Test
- Service and Repairs
- General Precautions for Removing and Installing Hydraulic System Components
- Check Hydraulic Lines and Hoses
- Flush Hydraulic System
- Filtering Closed--Loop Traction Circuit
- Hydraulic System Start--up
- Hydraulic Reservoir
- Hydraulic Pump Drive Shaft
- Hydraulic Pump Assembly
- Piston (Traction) Pump Service
- Gear Pump Service
- Front Wheel Motors
- Rear Wheel Motors
- Wheel Motor Service
- CrossTrax AWD Manifold
- CrossTrax AWD Manifold Service
- Deck Control Manifold
- Deck Control Manifold Service
- Cutting Deck Motor
- Cutting Deck Motor Service
- Lift Control Manifold
- Lift Control Manifold Service
- Lift Cylinder
- Lift Cylinder Service
- Steering Control Valve
- Steering Control Valve Service
- Steering Cylinder
- Steering Cylinder Service
- Oil Cooler
- 5 - Electrical System
- General Information
- Special Tools
- Troubleshooting
- Electrical System Quick Checks
- Adjustments
- Component Testing
- Ignition Switch
- Indicator Lights
- Hour Meter
- Temperature Gauge
- PTO Switch
- Headlight Switch
- Seat Switch
- Joystick Raise and Lower Switches
- Traction Neutral Switch
- Parking Brake Switch
- Mow/Transport Switch
- Start Relay
- Main Power and Glow Relays
- Toro Electronic Controller (TEC)
- Fuses
- Diode Assembly
- Fusible Link Harness
- Hydraulic Solenoid Valve Coil
- Temperature Sender
- High Temperature Shutdown Switch
- Oil Pressure Switch
- Fuel Stop Solenoid
- Fuel Pump
- Service and Repairs
- 6 - Chassis
- 7 - Cutting Decks
- 8 - Foldout Drawings
- Hydraulic Schematic
- Electrical Schematic Sheet 1 of 2 (Serial numbers below 315000000)
- Electrical Schematic Sheet 2 of 2 (Serial numbers below 315000000)
- Eclectrical Schematic (Serial numbers 315000001 to 403430000)
- Eclectrical Schematic (Serial numbers above 403430001)
- Main Wire Harness Drawing (Serial numbers below 315000000)
- Main Wire Harness Diagram (Serial numbers below 315000000)
- Main Wiring Harness Drawing (Serial numbers 315000001 to 403430000)
- Main Wiring Harness Diagram (Serial numbers 315000001 to 403430000)
- Main Wiring Harness Drawing (Serial numbers 403430001 to 405699999)
- Main Wiring Harness Diagram (Serial numbers 403430001 to 405699999)
- Main Wiring Harness Drawing (Serial numbers above 405700000)
- Main Wiring Harness Diagram (Serial numbers above 405700000)
- Seat Wire Harness Drawing
- Seat Wire Harness Diagram
- Engine Wire Harness Drawing
- Engine Wire Harness Diagram
Groundsmaster 4300--D Page 5 -- 7 Electrical System
Retrieving Fault Codes
All machine fault codes are retained in the TEC control-
ler memory. The three (3) most recent fault codes that
have occurred within the last forty (40) hours of opera-
tion can be retrieved using the diagnostic light. To re-
trieve these fault codes from the controller memory,
perform the following switch sequence:
1. Operator seat should be UNOCCUPIED, traction
pedalinneutral,parkingbrakereleasedandPTOswitch
in the OFF position.
2. Place mow speed limiter in the TRANSPORT posi-
tion.
3. Move and hold joystick in the RAISE position.
4. Turn ignition switch to the RUN position.
5. Monitor the diagnostic light for fault code(s).
NOTE: Once the diagnostic light begins to display fault
codes, the joystick can be released.
Faultcodesdisplayed bythediagnosticlightaretwodig-
it numbers with no digit higher than five (5). Fault codes
are listed in the chart below. There will be a one (1) sec-
ond pause between the first and second digit of a code.
Up to three (3) fault codes retained in controller memory
will be displayed by the diagnostic lightin order from the
most recent fault to the oldest fault. If there are multiple
faults in controller memory, there will be a three (3) sec-
ond pause between codes. The fault codes will continu-
ally repeat after a five (5) second pause until the ignition
key is turned off.
If there are no faults that have occurred within the last
forty (40) hours of operation, the diagnostic light will
flashcontinuously after performing theabove switchse-
quence.
Ifa fault codeisnot retrieved fromthecontrollermemory
within forty (40) hours of machine operating time, the
fault cannot be retrieved from controller memory using
this procedure. If necessary, contact your Toro distribu-
tor to retrieve older fault codes.
Fault Code (Lamp Flashes)
Fault Description
1--1 High engine temp warning occurred (PTO w as shutdown by controller)
1--2 High engine temp shutdown occurred (engine was s hutdown by controller)
1--3 Low engine oil pressure occurred
1--4 Engine alternator fault occurred
Clearing Fault Codes
After fault codes have been retrieved, clearing of those
faults can be completed using the following switch se-
quence:
1. Place machine switches in fault retrieval (see
above). The diagnostic light should be displaying the
fault codes.
2. Operator seat should remain UNOCCUPIED.
3. Move mow speed limiter to the MOW position.
4. Move joystick to the RAISE position.
5. Monitor the diagnostic light for continuous flashing
indicating that all faults have been cleared from the con-
troller memory.
Electrical
System